Skiving machine



guy 8 `19.24.

N. V. DYER sKIvING MACHINE Filed Aug. l3-. 1919 @j y Figli.

latented duly 8, 1924,

laires stares SCHINERY oonrone'rron,

JERSEY,

nnwnm, V, Dyna, or Hersenen, Messecnusnrrs;assitance[Tofentransuon MA- es mannschnnnw Jansen,r e CORPORATION or NEW Application ieaveugust 1a `isis, se-nai 1ro. 317,311.

To all /w-z om it may concern Be it known that l, Nnwnnn V, Drnn, a citizen of the United States, residing at Holbrook, in the countj,7 of Norfolk and Stateof 5 Massachusetts, have invented', certain Improvements in` SkivingfM-achines, of which the following description, in'co'nnection with the accompanying drawings, is a specification, like reference characters on the dra-wings rindicating' like parts in the several figures.

i This invention relates to skiving machines and is herein illustrated as embodied in a machine of the inazeen type such as is showninthe patent to Bayley No. 823,57 8, granted June 19, 1906. fln the manufacture ofk certain kinds of boots and shoes it is desirable tdproduee two or more scarfs which shall beV different' in width or in character or in both. For eX- ample, it may be'desirable to produce along the top and front of a quarter a shoulder scarf, to produce along the back a seam scarf, and to produce along the bottom a feather-edge scarf. Up to the advent of the machine of application Ser. No. 175,966, led in niyname on J une 20, 1917, now Patent llo. 1,327,028, it was necessary toi 2idjust several parts of the machine to produce these different scai'fs` ln the machine of the application there is provided a feed roll having'two work supporting surfaces to either of which the work may be guided at will by a work gaging member similar toi that shown in Patent No. 1,138,645, granted to me on May 11, 1915. Two different scarfs may be produced with the work supported upon one surface by causing the work to be guided differently on said surface, while a third scarf may be produced when the work is guided on the second surface, the feed roll being adjustable toward and from the knife to bring one or the other surface into proper positiont This machine has been put into use in considerable numbers and found satisfactory except in certain factories in which a long feather-edge scarf is desired. The

length possible to impart to a scarf of this' character depends upon the width of one of the surfaces on the feed roll; and for reasons whichi have to do with the proper relation is not desirable to make thissurface very wide; A

According to one feature of the invention the lroll 'isprovided with Ya single work-fV engaging surface and ismadefadjustable in' such manner that all of theidiiferent characters of scarfs may be produced while the work is supported on this QsurfaceifnK the illustrative Vmachine the -feed roll'is mountedfin an angularl37 adjustable carrier, the axis about which the carrier is adjustable extending at right angles to the axis of the roll and being" tangential tothe roll atla point spaced from the ends thereof. Nor` mally the Yroll occupies a position withrespect to the knife such'that a shoulder'scarf will be produce-d, and"Y when the roll is ad# justed'about the axis referred to a featheredge scarfA will' be produced thelengthcf whichis substantially'the same asthat of the shoulder scarf instead of being shorter than that of the shoulderf scarf as in the machine of the application.

itis desirable for reasons'iwhich will appear later'tliat the Yroll carrier belocked in some of 'its positions, and'anotheiv featureofy a skiving machine in which the presentin-A vent-ion is embodied;

F 2 is a rear elevation of the tilting carrier for the feed roll shaft;

Fig. 3 is a rearelevatioii showing the tilting carrier, the carrier guide andthe feed roll;

Fig. L1 is an elevation of the saine parts carrier and roll tilted; f f

Fig. 5 is a fragmentary plan showing more particularly the mechanism for lockus are shown in Fig. Shut showing the roll ing' the tilting carrier;` 'and' Fig. 6 comprises three sectional views of three scarfs of different types.

The illustrative machine is of the well knownAmazeen type, in which the work is fed toa rotary Vdisk knife bymeans of a feed roll and a feed disk. roll .andgagemechanism and their associated'. parts,the` machine is or maybe sub-stantially like thatshown in the patent to Bayley. A portion of the rotary diskknifeis indicated at 7 and a portion of the feed disk at 9, these parts being4 constructed, mounted and driven as in the patented machine, to whichcfreferencesis .made fora detailed description. It will be understood that the feed disk 9is urged downward continually byV afspringso that it will' follow the roll in its tilting movement.

Referring first to Fig. .6, there 'are sho-wn in sect-ion three vdifferent types or characters v ofi scarfs. :t 100 is shown a shoulder scarfwas desired, the other surface Ywas scarf, atf2`0'0a featheredge scarf, and at 360 auseam scarf. `The two latterkbeing straight" v scarfslas vdistinguished from the shoulderscarf. '.VVith the machine of my prior application it wasl nossiblelto produce three scarfsiof these 'general types without adjustment of the knife kor edgegage by reason'of: the; provision, lamong'- other elements, of 'a special roll havingtwo surfaces upon either of whichthe margin ofi the work could ,besupported whilelbeing skived. A.'

shoulder scarfora seam' scarf could vbe pro,-Y

ducedattwill while the work wassupported on; onev surface Sandi 'when' av feather "edge made*useofl` 'In' Vthe-present machine all three types i off! scarf 'maybe` produced, one

aftertheother, while Vthe margin'of'the work' is'supportedion one andthe saine surface of -r the'roll', two oft'hescarfs, the" feather-edge" scarf; Aandfthe seam scarf being produced whileV the. roll `is' vin one position, and the other, the shoulder scarf, Vbeing 4produced while the roll is in another position.'`

Referring now f to 'the remaining figures,

i the base-11 of the machine has pivoted'to it atl abra'cketl, sai'd bracket being adjustable about the pivot by a screwl7'and being heldin `adjusted position by a screw-19, this construction being substantially like that sh'ownin'- the Bavley patent,`its purpose beling topermit adjustment ofthe feedv rollitoward and from the knife. Mountedv in this bracket is'a. :shaft 2l which" corresponds to the feed roll shaftof the Bayley patent, and

like that shaft is driven by means of bevel gears 23, 25; Theforwardendof. the shaftf 2l has a socket in which is fastened by a pin' 27 the rear rounded end" oflink 29,.hejforward rounded end of rthe saine `'llink i being fastened by a pin 31 in' a socket .in a member Sdi-The pins `271 and; 3l pass' through the usual'. slots .in ",thefzround'ed Yen'dsloiz" the link 29 so that the shaftlgiandfthe member 33 EXceptwforv theY are connected by a universal joint. A feed roll 35 is fast at the outer end of a shaft 37 which passes through a bearing in a roll carrier 39 and into a socket in the member 33, the shaft being adjustably fastened to the Y.member by set screws, one of which is shown carrier 39 is tilted, the roll is adjusted angui larly about that axis, as indicated in Fig. 4, the inner. end of the roll beingraised and the outer end lowered. In order to permit the position of this axis to be changed with respect to. the roll, a plurality of washers 53 are located between the inner end ofthe roll andthel outer end of the roll carrier V39. When one of these washers has been removed thezroll'andits shaft may be adjusted inwardly (to .the right in F ig. -l or to the left in Figs. 3 and 4) withthe. result that tilting the roll Vcarrier a given extent will raisethe inner; end of theroll to a higher level than would have occurred had the .roll occupied the .position with respectv to' the carrier shown in the drawings. The roll comprises alfrusto-co-nical hurled-.portion 135, which terminates 'at its outer end in a shoulder, and

a smooth' portion 235. The nurled portion is the operative "work-engaging.. surface ffor supporting Vthemarginofthe work which is being'skived. The smooth portion merely co-operates with the feed disk 9 to advance the work. No'skiving is done upon thatpor-y tion fof; theV work supported thereby. The roll, therefore, hasfa single work-engaging surface whichis adapted to permit' ski'ving of the work upon it.

' yThefroll ycarrier39 is normally held in the position shown in Figs. l and 3 by aspring 55, the free end of'which engages a pin 57 driven into the plate 46, a .portion of the spring; being coiled about' a' pin 59 driven into the bracket l5, and having its otherend located .in a recess 6l inthe bracket 15 Afurther downward movement" of the roll carrier being prevented by Contact 'ofthe bottomV surfaceY ofthe carrier .withl the adjacent fupl per surface. of the bracket. fWitli the V,roll

carrier infthisposition, the element of. thev` nurled surface 135 ofthe ro'lllwhich fis adju# cent tothe knife is 'substantiallyn parallel to th'elplanei of:` the knife se that ai shoulder scarf'will beproducedff I The 'roll carrier vr39 is.normal'ljiflocked in' itsy horizontalposition by means off a block" 63 and: a'crank pin 65.. .The block-is located' in a horseshoe-shaped recess in the segmental guide rib 43 and has an operative face 163 which is curved to correspond to the curve of the edge of the guide. This face is is in contact with the adjacent face of the. curved guide slot 45 so that when the block is forced outwardly (to the right as viewed in Figs. 2, 3, 4 and 5) the carrier is locked in position. The crank pin 65 is an eccentrically located, reduced portion of a stud 67 which is capable of oscillation in alined bearings formed respectively in the plate 46 and in the roll-carrier 39, said plate being in effect part of the carrier. On that end of the stud 67 which projects from the plate is fas'- tened one end of a crank 69, the other end being pivoted at 71 to the upper end of a treadle rod 73. This rod is pivoted at its lower end of a treadle (not shown) of such construction that manipulating the treadle raises the rod and freeing the treadle allows the rod to descend.

The operation of tilting or angularly adjusting the roll carrier takes place as follow -The parts are normally in the positions best shown in Figs. 2 and 3 with the roll carrier 39 in its horizontal position and locked in place by the action of the block 63. When it is desired to tilt the roll car` rier, and with it the roll, the treadle is manipulated to raise the treadle rod. The first effect of this upward movement is to unlock orrelease the carrier, which takes place before the upper end of the treadle rod contacts with the pin 57. Thereafter the rod by pushing upwardly against the pin, tilts the roll about the axis 51 until an adjustable stop in the form of a nurled nut 75 threaded on the treadle rod 7 3 contacts with the frame of the machine. The operator holds the roll in this position (see Fig. 4) until the particular scarf desired has been produced on the work and then releases the treadle. The spring 55 is strong enough to hold the pin 57 against the upper end of the rod 73 while it is returning the roll carrier to horizontal position. After the roll carrier has reached this position and stopped, the treadle continues its downward movement, thereby rotating the stud 67 and locking the carrier, the final and normal position of parts being shown best in Fig. 3. Grdinarily the adjustment of the roll will be carried out as has been described, but it should be noted that the roll carrier may be locked in any angular position by tilting the carrer to the desired position, holding the Vcarrier for al moment with the hand and then releasing the treadle. Thereafter the angular position of the roll and roll carrier will be maintained until the treadle is again manipulated. The purpose of providing the locking mechanism is first to ensure that the roll shall not vibrate when in its normal, horizontal position, and second to provide for holding it similarly in any desired angular position. The lock is not necessary and has not been made normally operative for that position, as in Fig. 4, in which the treadle is being held down firmly by the operator.

Referring now to the work gaging or guiding device, this is or may be substantially the same as shown and described in my prior application and will therefore be described only in a general way. The presser foot 7 7 and edge gage 7 9 are rigid with each vother and held in position by a thumb screw 81. After the thumb screw has been loosened, the foot and gage may be adjusted longitudinally of the roll to provide for scarfs of different widths. Although the gage 79 may thus be adjusted, it will be referred to as the stationary gage to distinguish it from themovable gage 83, the stem of this latter gage being pivoted at 85 to a member which may be adjusted along the roll by turning the thumb-nut 37. The movable gage is thus adapted to permit the work to be introduced beneath it so as to be guided by the stationary gage`79 or to permit the edge of the work to be held against it, in which case it performs the guiding function. The gages may be adjusted in unison along the roll or may be adjusted separately 'to vary the distance between them, and either gage may be used at any time.

Assuming that the parts of the machine are in the positions shown in Fig. 1, the operation of the machine to produce the scarfs indicated at 100, 200 and 300 is as follows. The work is introduced beneath the movable gage 83 with its edge against the stationary gage 79 and fed through the machine to produce the shoulder scarf 100. If it is desired to produce the feather-edge scarf 200, the roll is first tilted to the position shown in Fig. 4. and the work is then presented in the same manner as indicated above, being guided by the stationary gage 79. 1t will be noted that the feather-edge scarf thus produced is of substantially the same length as that of the shoulder scarf. If it is desired to produce the seam scarf 300, the roll is tilted as for the feather-edge scarf but the gage 83 is used to guide the work.

Ey reason of the fact that the axis about which the roll is tilted is substantially7 tangential to the periphery of the roll at a locality spaced from the ends thereof. it will be noted that the tilting of the roll simultaneously raises the inner end of the roll and lowers the outer end. It is the raising of the inner end into the plane of the cut of the lrnife which causes the feather-edge scarf to be produced; and the point 51 should therefore be spaced a substantial distance from the inner end of the roll. ln practice a spacing from the inner end of the roll of from one thirty-second to three-sixteenths of an inch has adapted the machine to produce satisfactorily the usual scarfs on the usual thicknesses of Work; but it should be understood that these definite figures are given by Way of explanation; and not of limitation.

Although the invention has been set forth as embodied in a particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine Which has been shown and described.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent of the United States is:

7i. .Si machine of the class described having, in combination, a feed roll having a single Work-engaging surface adapted to permit skiving of Work upon it, and Work means for guiding the Work over the roll in either of tivo different positions to produce either a feather-edge or a seam scaff; said roll being adjustable to produce a shoulder scarf.

2. ii machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, and an anguiarly adjustable member by which the roll is carried, the axis about Which the member is adjustable being substantially tangential to the periphery7 of the roll at point spaced from the ends thereof.

3. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, and an angularly adjustable member by which the roll is carried, the axis about Which the member is adjustable being substantially tangential to the periphery of the roll at a point spaced from the ends thereof, the roll being adjustable in its adjustable carrier in a direction transverse to the direction of feed of the Work to vary the location of said axis With respect to the ends of the roll.

4. A machine of the class described having, in combination, a skiving knife, a feed roll having a Working surface terminating in a shoulder, said roll being normally so located With respect to the knife that the element of its Working face nearest to the plane of the knife is substantially parallel to said plane so that a shoulder scarf will be j noduced, and means for permitting the roll to be adjusted about an axis Which is substantially at right angles to the element and passes through it at a point spaced from the ends to cause a straight scarf to be produced 5. .a machine of the class described having, in combination, a skiving knife, a feed roll having a Working surface terminating in a shoulder, said roll being normally so located with respect to the knife that the element of its Working face nearest to the plane of the knife is substantially parallel D produced the .unting of the roll being such that it may1 Je adjusted in the direction of its length to ary with respect' to the roll the location of the axis about which it is adjustable 6. A machine kof the class described heving, in combination, a skiving knife, a rotary feed roll, and means for tilting the roll in such manner as simultaneously to loiver one end of the roll and raise the other end into the plane of the cut of the knife, the mounting of the` roll being such that it may be adjusted to vary the relative extent of the raising and lowering of the tivo ends.

7. A. machine of the class described having, in combination. a feed roll, a skiving knife the plane of the cut of which is normally,substantially parallel. to the adjacent element y of the surface ofthe feed roll, and rmeans whereby the roll may be tilted to cause the element to be intersected by the plane, the mounting of the roll being such that it may be adjusted to vary the point of intersection.

8. A machine of the class described having, in combination, a rotary disk skiving knife, a feed roll for advancing Work to the knife, and an angularly adjustable member by which the roll is carried, the axis about Which the member is adjustable being substantially tangential to the periphery of the roll at a'point spaced from the ends thereof.

9. A machine of the class described having, in combination, a skiving knife, a feed lroll for advancing Work to the knife, means for holding the roll in position to produce with the knife a shoulder scarf, and operator controlled means adapted to be manipulated'during the operation of the machine for tilting the roll about an axis which is substantially tangential to the periphery of the roll to produce a straight scarf.

10. A machine of the class described hav-- ing, in combination, a skiving knife, a feed roll for advancing Work to the knife, means for normally holding the roll in position to produce with the knife a given scarf, and treadle-controlled means for tilting the roll about an axis Which is substantially tangential to the periphery of the roll to vary the character of the scarf produced` 11. A machine of the class described having, in combination, a skiving knife, a feed roll having a single Work-supporting surface adapted to permit skiving of work upon it, means for normally holding the knife and roll in relative positions to produce a given scarf, and treadle controlled means for varying the relative positions of the knife and roll to produce a different scarf.

' 12, A machine of the class described having, in combination, a skiving knife, a 'feed r il 'iaving a single Work supporting surface adapted to permit skiv'ing of Work upon it, means for normally holding the knife and roll in relative positionsk to produce a given scarf, and treadle controlled means for tilting the roll so as to support the ivork'differently with respect to the knife to vary the character of the scarf producede 13. A machine of the class described having, in combination, a skiving knife, a feed roll having a single Work supporting surface adapted to permit skiving of Work upon it, means for normally holding the knife and roll in relative positions to produce a given scarf, and treadle controlled means for tilting the roll about an axis substantially tangential to the roll at a point spaced from the ends. thereof.

14. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing the Work to the knife, Work gaging means having a member beneath which the Work may be introduced or against which it may be held, and means for adjusting the roll about an axis which is substantially tangential to the roll at a point spaced from the ends thereof.

15. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing the Work to the knife,

Work ga-ging means having a member beneath which the Work may be introduced or against which it may be held, and treadle controlled means for adjusting the roll about an axis which is substantially tangential to the roll.

16n A machine of the class described having, in combination, askiving knife, a feed roll having a single Work supporting surface adapted to permit skiving the Work upon it, said roll being normally held in position to cause the knife to produce a shoulder scarf; Work gaging means having a member beneath which the Work may be introduced or against Which it may be held, and means for adjusting the roll angularly to cause the knife to produce a straight scarf, c

17. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, an adjustable carrier for the roll, means for normally locking the carrier in one position, and a member manipulation of Which iirst unlocks the carrier and then changes its adjustment.

18. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, an angularly adjustable carrier for the roll, means for normally locking the carrier in one position, and a member manipulation of which first unlocks the carrier a d then changesV Vroll for advancing Work to the knife, an adjustable carrier for the roll, means for normally locking the carrier in one position, and treadle controlled means for releasing the carrier. j

20. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, an angularly adjustable. carrier for the roll, means for normally locking the carrier in one position, and treadle controlled means for releasing the carrier.

21. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, an adjustable carrier for the roll, means for normally locking the carrier in one position, and a member movement of Which in one direction releases the carrier and changes its adjustment and in another direction permits return of the carrier to the first position and locks it.

22. A machine of the class described having, in combination, a skiving knife, a feed roll for advancing Work to the knife, an angularly adjustable carrier for the roll, means for normally locking the carrier in one position, and a memb'er movement of which in one direction releases the carrier and changes its adjustment and in another direction permits return of the carrier to the first position and locks it.

y 23. A machine of the class described having, in combination, a skiving knife, a. feed roll for advancing Work to the knife, a carrier for the roll adjustable about an axis which is substantially tangential to the periphery of the roll, means for locking the carrier in a selected position, and treadle controlled means for releasing the carrier.

24, A machine of the class described having, in combination, a. skiving knife, a feed roll for advancing Work to the knife, a carrier for the roll adustable about an aXis which is substantially tangential to the periphery of the roll, means tending at all times to move the carrier to and hold it in a given position, and means for moving the carrier in opposition to said first-named means.

25. A machine of the class described, having in combination, a skiving knife, a feed roll for advancing Work to the knife, and an angularly adjustable member by which the roll is carried, the axis about which the member is adjustable being tangential to the periphery of the roll on the same side of the roll as that on which the knife is located and at a locality near one end of the roll but spaced from the end.

26. A machine of the class described. hay ing, in combination, a skiving knife, a feed roll for advancing Work to the knife, an angularly adjustable carrier by which the roll is carried, the a-Xis about which the member is adjustable beingsubstantially tangential to the periphery of the roll at a point spaced a substantial distance from one end thereof,

and means whereby the roll and knife may be adjusted relatively to each other in a di- 10 rectiontransverse to the direction of feed of the Work.

In testimony whereof I 11a-ve signed my name to this specification,

NEWELL V. 

